That might explain why I get belt problems on some cleaners. Sometimes, even with a new belt, the belt slips. I've always blamed it on the belt. Unless you have a side by side comparison, like the picture above, you might not catch the problem. Makes sense when you think about it. The pulley is in the dirt stream. I'll have to pay more attention to this. I've got some commercial Sanitaires to go over and I'll check the pulleys when I do.
Good find.
Joe
